document.write( "Question 700585: in a class,45 students take the SAT exam. the number of boys is 8 more than the number of girls. write a system that models the above situation and find the solution. do you need to multiply any of the equations by a constant?if so, which equation and what is the constant? \n" ); document.write( "
Algebra.Com's Answer #431877 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
in a class,45 students take the SAT exam. the number of boys is 8 more than the number of girls. write a system that models the above situation and find the solution.
\n" ); document.write( "----------
\n" ); document.write( "Using 2 equations:
\n" ); document.write( "b + g = 45
\n" ); document.write( "b = g + 8
\n" ); document.write( "-------
\n" ); document.write( "Rearrange:
\n" ); document.write( "b + g = 45
\n" ); document.write( "b - g = 8
\n" ); document.write( "------
\n" ); document.write( "Add and solve for \"b\":
\n" ); document.write( "2b = 53
\n" ); document.write( "b = 26.5
\n" ); document.write( "Rounding up b = 27 (# of boys)
\n" ); document.write( "-------
\n" ); document.write( "Solve for \"g\":
\n" ); document.write( "b + g = 45
\n" ); document.write( "27 + g = 45
\n" ); document.write( "g = 18 (# of girls)
\n" ); document.write( "=======
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "=======
\n" ); document.write( "
\n" );